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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Quartz from
Eldorado Bar, East Helena, Lewis and Clark County, Montana, USA


Locality type:Placer
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Eldorado Bar, East Helena, Lewis and Clark County, Montana, USA
Data Identifiers
Mindat Occurrence Record ID:1009199
Long-form Identifier:1:3:1009199:5
GUID (UUID V4):0
Nearest other occurrences of Quartz
17.0km (10.5 miles) ⓘAriadene Claim (Adiadene Claim), Sevenmile-Scratchgravel Mining District, Lewis and Clark County, Montana, USA
17.3km (10.7 miles) ⓘPrickly Pear Claim, Sevenmile-Scratchgravel Mining District, Lewis and Clark County, Montana, USA
17.7km (11.0 miles) ⓘElizabeth Mine, Sevenmile-Scratchgravel Mining District, Lewis and Clark County, Montana, USA
17.8km (11.0 miles) ⓘMoonlight Mine, Sevenmile-Scratchgravel Mining District, Lewis and Clark County, Montana, USA
17.8km (11.1 miles) ⓘHopeful Mine, Sevenmile-Scratchgravel Mining District, Lewis and Clark County, Montana, USA
17.8km (11.1 miles) ⓘBlue Bird Copper and Silver Mining Company, Sevenmile-Scratchgravel Mining District, Lewis and Clark County, Montana, USA
17.9km (11.1 miles) ⓘQueen of the Valley Claim, Sevenmile-Scratchgravel Mining District, Lewis and Clark County, Montana, USA
17.9km (11.1 miles) ⓘBonanza Mine, Sevenmile-Scratchgravel Mining District, Lewis and Clark County, Montana, USA
18.0km (11.2 miles) ⓘNorth Star Claim, Sevenmile-Scratchgravel Mining District, Lewis and Clark County, Montana, USA
18.1km (11.2 miles) ⓘMullin Claim / Great Mullein Claim, Sevenmile-Scratchgravel Mining District, Lewis and Clark County, Montana, USA
References
Kievlenko, Eugenii Ya., Soregaroli, A. - Ed. (2003) Geology of Gems - First English Edition. Ocean Pictures Ltd. p.1-468.p.70
 
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